[Warmboot] teamsyncd timer support 'disable' to skip teamd reconciliation

[dzhangalibaba]

• accept 'disable' as a indicator which means to skip teamd warmboot reconciliation

• internally it is using value 9999 as disable_warmstart_teamsyncd_timer_value

• show cmd modification

• this PR works with [Warmboot] skip teamd reconciliation logic via teamsyncd timer setting sonic-swss#1364

• UT:

[email protected]:~$ sudo config warm_restart teamsyncd_timer 0
Usage: config warm_restart teamsyncd_timer [OPTIONS] <seconds>

Error: teamsyncd warm restart timer must be in range 1-3600 or disable

[email protected]:~$ sudo config warm_restart teamsyncd_timer 1
[email protected]:~$ redis-cli -n 4 hgetall "WARM_RESTART|teamd"
1) "teamsyncd_timer"
2) "1"

[email protected]:~$ sudo config warm_restart teamsyncd_timer disabl
Usage: config warm_restart teamsyncd_timer [OPTIONS] <seconds>

Error: Invalid value for 'seconds': disabl is not a valid integer or 'disable'

[email protected]:~$ sudo config warm_restart teamsyncd_timer disable
[email protected]:~$ redis-cli -n 4 hgetall "WARM_RESTART|teamd"
1) "teamsyncd_timer"
2) "9999"

[email protected]:~$ sudo config warm_restart teamsyncd_timer 45
[email protected]:~$ show warm_restart config
name    enable    timer_name         timer_duration
------  --------  ---------------  ----------------
teamd   false     teamsyncd_timer                45
[email protected]:~$ sudo config warm_restart teamsyncd_timer disable
[email protected]:~$ show warm_restart config
name    enable    timer_name       timer_duration
------  --------  ---------------  ----------------
teamd   false     teamsyncd_timer  disable

Signed-off-by: Dong Zhang [email protected]

[dzhangalibaba]

@yxieca

[pavel-shirshov]

Please check my comment

[pavel-shirshov]

retest this please